Heavy Lake Effect Snow; Subfreezing Temperatures in the Eastern U.S.

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. The Arctic front will continue to bring increasing winds to the Northeast that will remain gusty. Subfreezing overnight low temperatures will be found as far south as the Gulf Coast. Read More >

Current conditions at

LOS ALTOS (LOAC1)

Lat: 37.35472°NLon: 122.14167°WElev: 539.0ft.

NA

42°F

6°C

Humidity 71%
Wind Speed WSW 4 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Wind Chill40°F (4°C)
Last update 30 Dec 03:10 AM PST
Extended Forecast for

2 Miles SSW Cupertino CA

  • Overnight

    Overnight: Mostly clear, with a low around 39. Light west northwest wind.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 61. Light and variable wind becoming north northeast around 5 mph.

    High: 61 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain after 4am.  Mostly cloudy, with a low around 46. Light and variable wind.

    Low: 46 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday

    Wednesday: Rain likely, mainly after 10am.  Cloudy, with a high near 57. Calm wind becoming east around 5 mph in the morning.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 57 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain.  Areas of fog. Low around 48. East southeast wind 3 to 5 mph.  Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 48 °F

    Rain and
    Areas Fog

  • New Year's Day

    New Year's Day: Rain.  Areas of fog. High near 60. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 60 °F

    Rain and
    Areas Fog

  • Thursday Night

    Thursday Night: Rain.  Patchy fog before 1am. Low around 53. Chance of precipitation is 80%.

    Low: 53 °F

    Rain and
    Patchy Fog

  • Friday

    Friday: Rain.  Cloudy, with a high near 59.

    High: 59 °F

    Rain

  • Friday Night

    Friday Night: Rain.  Cloudy, with a low around 47.

    Low: 47 °F

    Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 39. Light west northwest wind.
Tuesday
Mostly cloudy, with a high near 61. Light and variable wind becoming north northeast around 5 mph.
Tuesday Night
A 30 percent chance of rain after 4am. Mostly cloudy, with a low around 46. Light and variable wind.
Wednesday
Rain likely, mainly after 10am. Cloudy, with a high near 57. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain. Areas of fog. Low around 48. East southeast wind 3 to 5 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
New Year's Day
Rain. Areas of fog. High near 60. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain. Patchy fog before 1am. Low around 53. Chance of precipitation is 80%.
Friday
Rain. Cloudy, with a high near 59.
Friday Night
Rain. Cloudy, with a low around 47.
Saturday
Rain likely. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 56.
Saturday Night
Rain likely. Patchy fog. Otherwise, mostly cloudy, with a low around 44.
Sunday
A chance of rain. Areas of fog. Otherwise, mostly cloudy, with a high near 57.
Sunday Night
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 43.
Monday
A chance of rain. Patchy fog. Otherwise, partly sunny, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Cupertino CA
 37.28°N 122.06°W (Elev. 666 ft)
12:27 am PST Dec 30, 2025
3am PST Dec 30, 2025-6pm PST Jan 5, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database